Consider adding to garden beds garden chrysanthemums, asters, or other fall-flowering plants to further extend the flowering season. Many greenhouse-grown mums are not hardy and will not survive over the winter. The earlier the mum is planted in your garden, the greater the chance of survival over winter. Mulch newly planted perennials immediately.

Remove yellowing daylily foliage or leaves that are browned and spotted. Green leaves must remain on the plant to continue to manufacture food. Deadhead individual flowers to keep plants looking tidy.

Daylilies can be divided and replanted or new plants can be installed at the end of this month. Peonies can be planted at the end of this month and into early fall.